JPS57129906A - Device for increasing pressure of fluid only at increase in load - Google Patents

Device for increasing pressure of fluid only at increase in load

Info

Publication number
JPS57129906A
JPS57129906A JP56015933A JP1593381A JPS57129906A JP S57129906 A JPS57129906 A JP S57129906A JP 56015933 A JP56015933 A JP 56015933A JP 1593381 A JP1593381 A JP 1593381A JP S57129906 A JPS57129906 A JP S57129906A
Authority
JP
Japan
Prior art keywords
pressure
piston
cylinder
load
generate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP56015933A
Other languages
Japanese (ja)
Inventor
Kunio Mori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HOUWA GIKEN KK
HOWA GIKEN KK
Original Assignee
HOUWA GIKEN KK
HOWA GIKEN KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HOUWA GIKEN KK, HOWA GIKEN KK filed Critical HOUWA GIKEN KK
Priority to JP56015933A priority Critical patent/JPS57129906A/en
Publication of JPS57129906A publication Critical patent/JPS57129906A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE:To enable the adoption of a compact cylinder, by providing a device which is appropriate to the cylinder required to receive a high force at the time of initial motion or of compression near the end of forward movement and can generate a small amount of high-pressure fluid under heavy load and generate a large amount of low-pressure fluid under light load. CONSTITUTION:During the expansion of a cylinder 30, a heavy body 40 collides against an obstacle 50 so that the pressure of pressurized oil from an inlet port 1 rises. When the pressure has exceeded a set level, a changeover piston 7 is moved rightward against a spring 4 to open a drain circuit 18 to release the pressure of the space 15 on the front of a pressure increasing piston 3. As a result, the piston 3 is moved leftward due to the pressure difference between the front and rear of the piston and a check valve 11 opened by a rod 10 so far is closed. At the same time, the pressure of pressurized oil in the intermediate space 16 is heightened by the cross-sectional area difference between a rod 5 and a piston 6 to supply a small amount of high-pressure oil to the cylinder 30 through an outlet port 2 to drive the cylinder by high pressure.
JP56015933A 1981-02-04 1981-02-04 Device for increasing pressure of fluid only at increase in load Pending JPS57129906A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56015933A JPS57129906A (en) 1981-02-04 1981-02-04 Device for increasing pressure of fluid only at increase in load

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56015933A JPS57129906A (en) 1981-02-04 1981-02-04 Device for increasing pressure of fluid only at increase in load

Publications (1)

Publication Number Publication Date
JPS57129906A true JPS57129906A (en) 1982-08-12

Family

ID=11902567

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56015933A Pending JPS57129906A (en) 1981-02-04 1981-02-04 Device for increasing pressure of fluid only at increase in load

Country Status (1)

Country Link
JP (1) JPS57129906A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016205494A (en) * 2015-04-21 2016-12-08 キャタピラー エス エー アール エル Fluid pressure circuit and work machine
CN112727857A (en) * 2020-12-29 2021-04-30 萨驰智能装备股份有限公司 Hydraulic pressurization system and tire vulcanizer
EP2784331B1 (en) * 2013-03-25 2021-08-11 miniBOOSTER HYDRAULICS A/S Hydraulic system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2784331B1 (en) * 2013-03-25 2021-08-11 miniBOOSTER HYDRAULICS A/S Hydraulic system
JP2016205494A (en) * 2015-04-21 2016-12-08 キャタピラー エス エー アール エル Fluid pressure circuit and work machine
US10415214B2 (en) 2015-04-21 2019-09-17 Caterpilalr SARL Hydraulic circuit and working machine
CN112727857A (en) * 2020-12-29 2021-04-30 萨驰智能装备股份有限公司 Hydraulic pressurization system and tire vulcanizer

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